Weighing apparatus.



H. B. MORRIS?. WEIGHING APPARATUS. APPLIOATION FILED MAR. 16, 1908.

899,551 Patented sept. 29, 1908.

I vTo all 'whom'it may concern.'

'UNITED sTAlrs PATENT. OFFICE.

HENRY B. MORRIS, OF GRAND RAPIDS, MICHIGAN;

WEIGHING APPARATUS.

Specification of Letters Patent.

Patented Sept. 29, 1908.

- Application led Huch 16, 19158. Serial No. 421,335.

u Be it known that I, HENRY B. MORRIS, a /cltlzen of the United States, residing in Grand Rapids, in ,the county of Kent and State of Michigan, have invented certain new and useful Improvements in Weighing Apparatus, of which the following is a specication. v

My invention relates particularly to the accurate wei hing of flour and my improved apparatus wi l, for convenience, be herein describedy as used for this purpose, althoughit Ais applicable to weighing meal, grain and other substances made up of relatively small `15 particles. A

Flour, as is well-known, is largely packed for the market in paper sacks of various sizes,

much as it is required that none of the sacks l shall be short in weight, it is common to so arrange the filling apparatus that a little more than enough flour shall be admitted to .each sack. In arge mills this practice results in a considerable loss tothe miller, sometimesamounting to several barrels per day and, so far as I am aware, no means have heretofore been provided for recovering the sur lus fiour whlch each sack thus contains.

ccording to my invention the sacks are filled as heretofore, with. a surplus of flour,

" and means are provided by which this'surplus is recovered and returned to the hopper or some other suitable rece tacle, while the requisite weight of flour is a lowe'd to remain in the sacks. u.

In carryin out my invention, each sack, yafter being Iled in the usual way, is placed on scales adapted to show the required weight and under a pneumatic suction apparatus or conveyer which, when properly adjusted, withdraws from the sack the surplus flour but which, when the surplus lourhas been removed, automatically separates Afrom the sack, leaving the latter to contain only the exact weight required.

In the accompanying drawings, Figure 1 is a perspectiveview of an apparatus for lac'- curately weighing flour constructed in accordance with my invention. Fig. 2 is a detailview of stop devices forming part of the pneumatic withdrawing device. Fig. 3 is a view in sectional elevation on an enlarged scale of the receiver at one end of the pneumatic withdrawing device. Fig. 4 is an end .view thereof.

There are many kinds of scales, balances or weighing devices which may be employed. I

.have illustrated a simple form of scales comprising a beam A, provided with a cross-bar a., having a knife edge and supported in brackets a', in which 4it is free to rock. At one end of the beam there is 'a sack-support B and on the. opposite portion of the beam there is an adjustable weight C. The brackets a are formed on or secured to a suitable bed-plate D, from which rise standards E,

supporting at their upper ends a rock-shaft F, to which is secured a frame G, carrying a pipe H, to one end of which is detachably connected at h a bell-mouthed receiver I, which is adapted to enter a sack of flour, placed beneath it on the support B of the scales. To the opposite end ofthe pipe His attached a flexible pipe or hose J, which connects witha pump, fan or blower K, also connected by a pipe or hose L with a bin or hopper M. The frame G is adapted to oscillate or rock in such manner as to insert the bell-mouthed receiver into a sack of iiour beneath it or to be entirely -withdrawn therefrom. Normally the receiver is depressed. It is raised by devices presently to be described. The fan is rotated continuously by a suitable motor, -such as K". An electroma net N is supported on a shelf or bracket N eneath an armature O, attachedq to the frame G and thismagnet is connected by wire a: with a cup of mercury P and-by wire x With a source of electricity Q, which is also connected as illustrated by wire-az:2 with the scale-beam A, which carries a contact device 'y adapted to enter the mercury .cup P.

port B is arrested by a cushion of insulating I material b against which a boss b, projecting downwardly from the support B, abuts.

In order to arrest the downward movenient of the receiver I as it enters the sack and to prevent it from coming into direct contact withthe flour, the shaft F is provided with a stop-pin 1', coperating with a similar pin r, on one of the standards E.

ilo

. inserted into an To prevent lumps from entering the conveyer, a reticulated screen R may be stretched across the Vmouth of the receiver.

When an over-wei hted sack of fiouris placed on the support the scales will be depressed and the receiver I is placed in the mouth of the sack, as shown in Fig. 1. The electric circuit is then broken at the mercury-cup Aand the suction produced by the fan K willcause thesurplus iiour at the top of the sack to be drawn through the conveyer and passed to the bin or ho per M. When nearly all of the surplus flour has thus been withdrawn, the sack-supporting end of scales beam will rise, the contact y will enter the mercury and the electric circuit will be closed, causing the electro-magnet N to attract its armature. and the receiver I to rise from the sack and the withdrawal of flour therefrom to be stopped.'

The parts of the apparatus may be so adjusted and the current of air through the conveyer be so regulated as to entirely stop the withdrawal of iiour from the sack at the instant that the required weight has been reached.

Sacks may in this way have their weight of flour lquickly and accurately obtained without loss from handling.

While my invention has been described as especially intended for:V use in obtaining the accurate weight of flour in sacks, I wish it understood that it -is also applicable for a similar purpose to other materials contained in other receptacles. .The details of the neumatic conveyer and the devices for with rawingl it from the receptacle may be varied and ot er forms of scales or weighing devices may be used.

I claim as my invention,

1. An apparatus for obtaining accurate weight, comprising scales on which a filled receptacle is supported, means adapted to be inserted into and Withdrawn from the upper part of the receptacle while on the scales to withdraw surplus material from the upper surface thereof, and devices for arresting .thej withdrawing action when the desired accurate weight has been obtained.

2. An apparatus for obtaining accurate weight., comprisingscales on which a filled receptacle is sup lorted, means adapted to be l(Iwithdrawn from the upper part of the. receptacle while on the scales to withdraw surplus material from the upper surface thereof, and devices for automatically arresting the withdrawing action when the desired accurate weight has been obtained.

3. An apparatus for obtaining accurate v weight, comprising scales on which a filled receptacle is supported, a pneumatic vconveyer adapted to connect with the open mouth at the top of the receptacle for withdrawing surplus material therefrom and devices for arresting the withdrawing action when-the desired accurate weight has been obtained. i

4. An apparatus for obtaining accurate weight, comprising scales on which a filled receptacle supported, a pneumatic conveyer adapted to connect with thc open mouth at the top of said receptacle for withdrawing surplus material from' the top thereof, and devices for automatically arresting the withdrawing action when the desired weight has been obtained.

5. An apparatus for obtaining accurate weight, comprising `scales on which a filled receptacle is supported, a receiver adapted to enter the mouth at the top of said receptacle, a conveyer connecting the receiver with a place for storage, and means for stopping the withdrawal of surplus material from the receptacle when-the desired accurate weight has been obtained.

6. An apparatus for obtaining accurate f `ing the receptac e with a place for storage, `and means for automatically arresting the` withdrawing action of the conveyer when the desired accurate weight has been obtained.

7. An apparatus for obtaining accurate weight, comprising scales on which a vfilled receptacle is supported, a receiver adapted to connect with the iilled receptacle, a pneu-l matic conveyer connecting the receiverwitli a place for storage, and means for arresting the withdrawing action of the conveyer when the desired accurate weight has been obtained. Y

8. An apparatus for obtaining accurate weight, comprising scales on which a filled receptacle is supported, a receiver adapted to be connected with and disengaged from the filled receptacle, a pneumatic conveyer connecting the receiver with a place for storage, and meansv for automatically arresting lthe withdrawing action of the conveyer when the desired accurate weight has been obtained.

' 9. An apparatus for obtaining accurate weight, comprising scales on which -a iilled Areceptacle is supported, a pneumatic conveyer adapted to connect said receptacle with a place for storage, and electro magnetic devices for arresting the withdrawing `action of the conveyer when'the desired accurate weight has been obtained.

10. An apparatus for obtaining accurate weight, comprising scales on which a filled receptacle is sup orted, a receiver adapted to enter the mout of the filled rece tacle, a rocking conveyer pipe to which sai( receiver is connected, a suction apparatus connected with said conveyer pipe and connected also with a place for storage and electro magnetic devices operatedby the movement of the scales to arrest the withdrawing action of said withdrawin devices when the desired accurate Weight as been Obtained.

11. An apparatus for Obtaining accurate Weight, comprising scales on which a filled receptacle is supported, a receiver adapted to enter the open mouth at the tp of the receptacle, a pneumatic conveyer connecting the receiver with a place for storage, and

10. electro magnetic devices operated by the scales for automatically arresting the Withdrawing action of the conveyer when the desired accurate weight has been obtained and the scales rise.

In testimony whereof/I have hereunto 15 subscribed my name.

HENRY B. MORRIS. Witnesses:

E. L. MONTGOMERY,

JOSEPH KIRWIN. 

